Multi-pressure control gear shifting operating valve

• Main Authors: LOU GUOYI, LIU GUOQING, BIAN WEIZHAN
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2021
• Subjects: BLASTING; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; ENGINEERING ELEMENTS AND UNITS; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIGHTING; MECHANICAL ENGINEERING; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; THERMAL INSULATION IN GENERAL; WEAPONS

The invention relates to a multi-pressure control gear shifting operating valve. The valve comprises a valve body. The valve body comprises a pressure regulating valve set, a brake valve set, a gear shifting valve set and an oil inlet main path communicating the pressure regulating valve set, the brake valve set and the gear shifting valve set. The pressure regulating valve set comprises a pressure regulating valve cavity, a pressure regulating valve element, a spring piece, a sliding block and a pressure control mechanism. The pressure regulating valve element is arranged in a sliding mode to control whether an oil inlet is communicated with a torque converter oil port or not, and the sliding block is arranged in a sliding manner to form a pressure regulating cavity. The pressure control mechanism comprises a first throttling oil way and a second throttling oil way which are arranged in a spaced mode, wherein the first throttling oil way is always communicated with the pressure regulating cavity and the oil